There used to be icons at the top showing who you recently texted or called when you double clicked the home button. But with iOS 9 update, it's no longer there. Is it gone forever or is now a setting that needs to be fixed?
That feature hasn't moved, it's gone. The new way requires getting to the home screen, swiping, tapping, then tapping again to call. Four steps whereas before it as double-click home button from anywhere, tap and go.
This is a de-enhancement and not a new feature. The OP got a how-to, but Asking Different would be "Why was a great feature made so bad."